Finding the Fourth Proportional to 142,655.05, 213,993.51 and 42,807.97

Step by Step Solution

1. Step 1: Write the proportion equation
   142,655.05 : 213,993.51 = 42,807.97 : x
2. Step 2: Convert to fraction form
   142,655.05/213,993.51 = 42,807.97/x
3. Step 3: Cross multiply
   142,655.05x = 213,993.51 × 42,807.97
4. Step 4: Simplify right side
   142,655.05x = 9,160,627,756.27
5. Step 5: Solve for x
   x = 9,160,627,756.27/142,655.05
6. Step 6: Final answer
   x = 64,215.24